/*
 * Copyright (C) 2014 Square, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.zxh.httpdemo.recipes;

import android.annotation.TargetApi;
import android.os.Build;

import java.io.IOException;

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.Headers;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
import okhttp3.ResponseBody;

public final class AsynchronousGet {
    private final OkHttpClient client = new OkHttpClient();

    public void run() throws Exception {
        Request request = new Request.Builder()
                .url("http://publicobject.com/helloworld.txt")
                .build();

        client.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                e.printStackTrace();
            }

            @TargetApi(Build.VERSION_CODES.KITKAT)
            @Override
            public void onResponse(Call call, Response response) throws IOException {
                try (ResponseBody responseBody = response.body()) {
                    if (!response.isSuccessful())
                        throw new IOException("Unexpected code " + response);

                    Headers responseHeaders = response.headers();
                    for (int i = 0, size = responseHeaders.size(); i < size; i++) {
                        System.out.println(responseHeaders.name(i) + ": " + responseHeaders.value(i));
                    }

                    System.out.println(responseBody.string());
                }
            }
        });
    }

    public static void main(String... args) throws Exception {
        new AsynchronousGet().run();
    }
}
